Rotary duplicator



S pt- 2, 70- G. H. PADGHAM 74,900 ROTARY DUPLICAT OR Filed April :50, 1929 5 Sheets-Sheet 1 ZT FE i E F 3-1 Sept. 2, 1930. G. H. PADGHAM 0 nor/m DUPLIGATOR Filed April so, 1929 s Sheets-Sheet 2 Sept. 2, 1930.

G; H. PADGHAM ROTARY DUPLICATOR Filed April 50. 1929 5 Sheets-Sheet s llrll-llll Sept. '2, 1930.

G. H. PAPGHAM nomw DUPLICATQR Filed April 50. 1929.

5 sneets -sneet 4 Fmflmrllil... -lilli- I l llllll lllllll Sept. 2, 1930. G. H. PADGHAM 1,774,900 4 noun nurmcuon Filed April 30, 1929 s sheets-smat- 5 Patented Sept. 2, 1930;

GEQRGEHEBBERT, PADGHAM, est mates, ENGLAND 1 v ARY W E I Application area A i -30,

This invention relates to rotary duplicators having perforated or like foraminous stencilcarrying cylinders, belts or" similar stencil supporting media, and has forlits object'to provide. improved means for feeding paper intothemachine. V

Paper from a pile is fed towardsth'e' cylinder by advancing that sheet which, for the time being, is uppermost, by means of a reciprocatory carriage, which is spring influenced in the feeding direction and adapted and a pressure roller therebeneathl 'During Y the return motion of the reciprocator'y. car

' the uppermost sheet of paper,; in readiness riage the pads or the'like slide freely Over to feed forward the succeeding sheet; When the fingers are inclined downwardly at an angle ofabout 459 to the paper,-o the'forward thrust on the uppermost sheet of" paper is most effective, and said sheet fed forward withsuretyr For other angles,' i. e. forutoo great any angle the. friction between the pads and the paper may be so great that no motion can take place, while'if the anglei be too small, the friction ay not be suflicientto move the paper, the pads sliding idly;over the surface thereof. In order, then, to; ensure that the fingers occupy this mostefficientposi- I tion, an object of the'inv'entionis" so war-1 range the paper-carrying means runway to the contact fingers, that theiuppermost sheet may be brought to the required level,'what-I 7 ever maybe the thickness of the pileofpaper;

(within the limits of the ,machine) whilst,-

' when the machine is in use, it is desirable that the uppermost sheet of paper sh ouldialways be at substantially-the same level, hen e, as

1929; ,seria no, 359,220;

each sheet is advanced the pile ofv paperl should be raised." It'is', therefore; a'fu'rther whereby f the table, supporting the pile of paper, may be raised step-by-stepjafter each sheet has been fed-forward, througha distance substantially equivalent to the thickness of a sheet of paper, in order'that the fingei-s may remain inclined at the tangle which gives the best result. I

" A further object of the invention is to provideimeans whereby the feeding, of the paper'to the machine is automatically and reliably stopped when a'icertain number; of sheets has beenffedzthereto; I JAnotherobject of theinVentiOn isto ensure that the" reciprocatory carriage shall not be advanced when'the contact-fingers have a still further'object of the invention is to provide, on'therecipro'catory carriage, a plurality of contact-fingers any number of which 1 maybe used at'a time, for the purpose ofiob- Ytaining the necessary thrust on the. paper,

whether it be thick or thin and whether it possessesa smooth or a rough surface. j

.oblect Of'theinvention ,,P 0V d m-means if been moved to. their inoperative position and According to the present invention the a paper to be fed to the cylinder issupported upon a table adapted to be slidden vertically by means of lifting mechanism; This lift ingmechanism may be in the form of a rotary cam. or'c'ams or in somecases'one' end of the table may'beraised by a rotary cam or cams I and th'e othe'r end'by a'lever or levers actu atedx by a cam or theflike. Preferably the lifting ,mech'anismis adapted to be set-to adjust the level of the paper initially and thereafter to beractuatedstep-by step as the. sheets of paperjare fed successively'tothe cylinder;- Forthispurpose the; cams may be secured to a rotary shaft adapted to be con-" furnished with *an operating handle so that, 1

vafterthe pawl, has been-disengaged from the ratchet, said shaft may be turne(ilfilnitially to adjust thelevel ofthe paper, Awhilsta second pawl reciprocated by the reciproc a trolledbyratchet and pawl mechanism and tory carriage is adapted to advance said shaft step by=step through the ratchet "wheel; as

the' maehine is-operat ed.

. i In order to obviate the necessity of counting the number of .sheets passing through the machine, an indicating finger may be set to any requirednumber and clamped to a disc driven concurrently with the cylinder, whilst a pawl adapted to co-operate with a rack on, or movable with, the reciprocatory I carriage is held, normally, out ofe'ngagement the carriage.

with said rack by a catch'resting on a stop and adapted,"when thepredetermined num- ,ber of sheets of paper has passed through the machine, to be engaged by. said indicat .ing finger and to be disengaged fromsaid stop thereby permitting the pawl to engage the rack and preventfurther reciprocation of yIn order tolock-up'the reciprocatory carriagegWhen the contact fingers are in their noperatlve position,;sa1d fingers are PlVOtw ally mounted and a bar extending transverselyrtherebeneath is carried by a lever in one with across bar, one end/of which is stepped, and a notched plate on'a fixed part of the machine'is so located relatively'to said stepped end'that in one angular position of said cross bar (to whicli position said cross bar may be moved by actuation of its lever),

the stepped end vwill passclear of said in accordance with the invention is illustrated Figure 1; Figure 41s a sectional plan to by the accompanying drawings, wherein Figure 1 is a plan view of a portion of the cylinder; Figure 2 'is a similar view, shewin g the parts in'a different position; Figure Sis a cross-section of a detail on the line 33 of illustrate the operative connections, the cylinderbeing omitted and Figures 5 and 6 are side elevations, one from the right and the other from the left, parts being broken away in both views for the sake of clarity; Figure 7 is a fragmentary view of the contact fingers in their inoperative position; Figure 8 is a fragmentary view of means for preventing the pressureroller from becoming soiled by contact with theinking surface of the cylinder, whilst- Figure 9 isa fragmentary iso- (ifi i metricview to an enlarged scale of part of the mechanism shown inFigure 5 with parts broken away forthe sake of clarity.

As shown 'inFigures 1, '2 and 3, a stencil 11 is formed with a number of perforations in order that one end thereofmay'be engaged with a series of pins 12, in a recess in the periphery of a cylinder 13, (Figures 1, 2, 3,

5 and 6). To the ends of said cylinder 13 and adjacent to the recess in which are situated thepins 12, are secured guide strips 14 to provide guideways for an arcuate plate 15, the surface of which may be roughened by the attachment thereto of emery-cloth or the like, said plate 15 being thus adapted to be slidden back to uncover the pins 12, as shewn in Figure 2, ,when it is desired to attach a stencil 11, and to be slidden thereafter into its normal position as shewn in Figure 1, and said plate 15 is so situated relatively to the cylinder 13 and its associated parts, that the leading edge of the paper which is to be printed comes into contact with the roughened surface of the plate 15, as it is fed forward to the cylinder 13, said roughened surface thus preventing relative movement between the contacting surfaces of the cylinder and paper.

A pile of the paper to be printed is stacked upon a supporting table16, adaptedto be mounted detachably and adiustahly with respect to the cylinder 13, as will be hereinafter described. The table 16 is provided with side-gripping devices 17, 18 of known type, and a gauge 19 for the rear edge of the paper which is fed towards the cylinder 13, while a roughened surface 16 is provided thereon, for the purpose of preventing the actuation of-the contact fingers, after the last sheet of paper has been fed to the printing cylinder. The cylinder 13 is rotatably mounted on a spindle 20 secured to the side frames 21, 22,-and may be caused to rotate by means of the crank-handle 23, attached on the outside of the side frame 21, to a spindlen to the inner end of which is secured a toothed wheel 24 adapted to engage with a similar toothed wheel 25' attached to the cylinder 13 on the-spindle 20.

For the purpose of advancing the sheet ofpaper, which for the time being is uppermost on the pile on the table 16, a reciprocatory carriage is provided, consisting of two side members 26, 27, mounted on the ends of horizontal bars 28, 29, the bar 29 forming also a support for a number of contact fingers 30 rotatably mounted on a bar 31 which is itself rotatable on the side-members 26, 27,

an'dresilientpads 32 of rubber or the like undersides of the fingers 30 to swing them to the inoperative position, as shown in Figure 7 The extent of the swing-back of the fingers is determined by the horizontal bar 28 which acts asa.backrstoptherefor..L, l

n It isfoundthat the most. suitable force exerted on the paper'to feed it to the cylinder- 18 when the fingers 80 are set at an angle of about'45..withrespect to the horizontal,

and in ordertoensure that the fingers will take up this position, the bar 29 is provided,

which acts ,asxa front stop'therefor, and determines the extentof the forward and down-f ward swing of the fii1ge1s"30 f 2 Motion is imparted to .the; reciproeatory carriage by 'meanskof apair'of horizontal Y frames 21, 22.- 'The side members 26, 27 7 are s arranged to reciprocatealong pairsof hori zontal guide bars 43, 4S and 44, 44, integral links 85, 86,'pivoted at'their front endsto lugs 37, 38, projecting from the side mem bers 26, 27, and passing through slots-39,40,

formed in apair of auxiliaryside frames 41, 42 securely attached to the main, side with the auxiliary side frames 41, 42; "The rear ends of the horizontal links 85,36 are pivoted at 48,49 .to oscillating levers 45, 46,.

pivoted at their lower endsfto I a: transverse bar 47 seciiredto the side frames21, 2 2. The lever 46 is" in the formof a bell-crank lever, j

and tothe other'arm, 50; of this lever is attached atensionspring 51, the other end of which is attached at '52 to the side-frame 22; "In this manner the reciprocatoryecarriage is ,sprin'g-influenced so that? its side members I 26, 27, andhen'cethebar-31 'carrying the,

fingers 80, tend to move-towards the cylinder 13, reverse movementkis;imparted, to the reciprocatory carriage by ineans of a} cam- 58'on the spindle-2O ofthe cylinder 13, which camis arranged to coactjwith an antifriction. roller 54 on a thrust-rod 55, the lower end i of which: is forked: to engage; a pin 56 on the arm 50' of the bell-crank lever 46, 50, and the upper; endQof which is bifurcated as at 57 and guided by, the bearing 58" for-thev cylinder spindle; 20; When the reciprocatory carriage ;is locked against movement,

asv will be described hereina'fter,f.tliethrust rod remains inits lowermostposition and unaffected by the aCtiQILOf;thGQCarrI-53 when the cylinder 13 is rotated,-,-.In order to lock the reciprocatory carriage. against motion," whenall the fingers 3O -a1re in theinoperatlve' position as shown, in F-i'gure, 7, one end "of the bar 31 projeeting;beyond the side-member 27 is cutaway as at 59 soastobe adapted 'to pass 'clearof a plate 60-, adjustab'ly,at-

' tached by pins 61 operating in slots 62, to the When the reciprocatory carriage is un-:

locked and the cylinder 13 is caused to rotate,

rotation of the crank handle 23, the pads 32, pressing on thejuppermost sheet of paper of the stack, will cause'this. sheet to be fed towards the cylinder from between the grip-- ping devices "17 18, until its leading edge enters between the cylinder 13 and a pressure roller 64 therebeneath, thexroughened sur- I 1 face of the plate 15 being at this-moment to said cylinder; The sheet of paper is given' immediately opposite saidpressure; roller owing tothe setting ofthefcam-53 relatively a slight upward tilt vby means of an inclined plate 65 rigidly attached tothe-base 66,;justl beforeits leading edge is engaged 1 by the roughened surface of the plate 15, thereby 3 V ensuring a smooth passage of the'sheet between the cylinder and the pressure roller.

64; This roller 64'is carried in bearingsat the free-ends-oftheIsubstantially horizontal arms 67, 68Zofbell-crank levers pivoted-to j. the transverse cross bar 69,1'whilst to the other arms 70, 71 of 'said bell-crank'levers 'areysecured pins72, 73, adapted tocarry a trans-g verse flat bar- 74, saidbar being'slidable along said pins against the action, of springs 7 5,, 76.

Acarn 77 mounted-on alcross bar-78, acts 1' against the flat-bar 74, and rotation of said I, cam forces the bar 74' against: the springs 7 .5,

76"and thus rocks the bell-crank levers 67,

(ar 64. This isforthe-purpose of varylng the'pressure between the roller andthe cyli'n I and 68, 71therebylifting the pressure roll-, t4

der 13. To one end 0f-the crossbar 78 i's attached an arcuate' ratchet 7 9- adapted' to beengaged normally by a pawl 8O.:?1The' ratchet is rotated by means of alleverl8l' 'splined on the end of the crossbar 78, outside the side frame 21. By rotating this leverin:

a clockwise direction (Figure'5), the cam" 77 may be caused to rotate step-bysstep, to raise the pressure roller64 correspondingly," and is-maintained in any one-of itspositions ion by means of thepawl 80, and, in order-to return the cam 77 and hence the pressure roller 64 to normal position, ausprlng-inflw;

enced push-button 82 is provided to disen-;'

gage the pawl from theratchet 79, toper- Init the pressure roller to return to its lower most position partly due to gravity and-"parte 1y due to the pressure of thesprings 75, 7 6.

' In order to movethe pressure roller 64 away'from the cylinder 13 against the action of the springs 75,76, a cam 83 ismounted on the cylinder 13 and is adapted to eoactlwith-q 1' anantifriction roller 84 on ja thrustrod 85,

pivotally connected-atits lower end'with'an 1 cylinder spindle 20; The upper endof the thrust rod85 is alsosupported by a link 90,

pivoted at one end tosa-id'thrust rodyandiata the other end toithe side-frame 21. Project arin 86 at one end ofa horizontal eross-bar 87 and is guided'at its upper end byanar n; I I c 88 thereon engaging the-bearing; 89 'ofthe.

ing from the cross-bar 87 are a pairoflugs '91, 92 (Figure) adapted to press from above iso crank levers isupporting'the pressure roller 64to force said levers downwards. Down- .ward movement of the thrust-rod 85, due to the action of the cam 83 and the antifriction roller 84, as the cylinder 13 is rotated, causes the arm 86 to be depressed, thereby rocking the cross-bar 87, and causing the lugs 91, 92

v to press the arms 67, 68 of the bell crank levers downwards to shift the pressure roller 64 out of'contact with the cylinder'13.

order to" prevent the pressure roller-64 from beingpressed against the cylinder 13 when the latter is rotated but when the reciprocatory carriage is locked or does not advance fullythere-towards, a stop-lug 85 projects outwardly fromthe thrust rod 85, whilst pivoted to a lug 85? projecting inwardly from the side-frame 21 isa notched plate 85 which under the action of a spring 85 also anchored to the side frame-21, liesnormally in the path of the stop lug 85 and thus is adapted to prevent upward movement of said thrust rod 85. :A lug 85 projecting outwardly from the notched plate 85,liesin the path of a downwardly and inwardly projecting plate secured to the horizontal bar '35 which, just at the end of thelforward travel of the reciprocatory carriage, engages the lug .85 and disengages the notch in the notched plate 85 from the stoplu'g85 Themovements of the parts of the mac'hineare so co-ordinated that this disengagement takes place when the cam Y 83 isnot exertingany thrust on the thrustrod 85, whereupon the pressure roller 64 has 7 permitted to be pressed upwards towards the cylinder 13, Hence, as the pressure roller 64 cannot be'movedzupward unless the carriage hasbeen advanced fully, and as the carriage cannot be'moved forward either when the last sheet of paper has been'fed forward, or when the required number offsheets 'of'paper has been fed forward, (the reciprocatory carriage being then looked bymeans of the pawl 149, 'aswill bejdescribed hereinafter), it follows that thepressure roller 64 cannot be pressedupward againstand be soiled by contact with, the inking surface of the cylin- The supporting table 16 is adapted to be raised or lowered according as a thin or thick pile of paper is to be fed to the printing cyl- "inder, so that the uppermost sheet of paper I may be presented at such a level relatively to the rod 31 on which the fingers 30 are pivoted that said fingers make with said paper substantially the mosteffective angle for feeding the paper'to thecylinder 13. I In order i that this effective angle maybe maintained, it

is obvious that the supporting table must be raised,*after each sheet of paper has been fed forward, by an amount substantially equivalent to the thickness of the sheet.

For thispurpose the table 16 is provided with transversely disposed lugs 93, 94, to-

ward that edge thereof nearer the cylinder 13, adapted to slide in vertical grooves 97 98, the table being supported on a pair of cams 99, 100 and a horizontal cross-bar 101 interconnected therewith and extending towards the rear end of said table, (see Figures 5 and 6). The cams 99, 100 are fixedly mounted on a transverse cross-bar 102 carried in bearing brackets secured to the base 66 of the machine. Mounted fixedly and eccentrically on the'cross-bar 102 adjacent each cam is an eccentric sheave 105, supporting an eccentric strap 106 so that rotation of the cross-bar 102 imparts a lifting motion to the straps 106. Secured by pins 108 to the lower points of the straps 106 are levers 110, 111, extending towards the rear of the machine, and pivoted by pins 112, 113 to lugs 114, 115 secured to the base 66. The forward ends of the levers 110, 111 are extended, and pivotally secured to the ends thereof by a transverse bar 116 is the U-shaped bar 117, 101, 118, the portion 101 lying transversely and forming the back rest for the table 16 as set forth above. The portions 117, 118 may be given an upward bend to ensure that the portion 101 lies substantially in the same horizontal plane as the upper faces of the cams 99, 100. The portions 117, 118 are extended beyond the pivot 116' and formed with recesses, adapted to engage with pins secured to the inner faces of the levers 110, 111, which provide a backstop for the portion 117, 101, 118 of the table rest. It will be seen, therefore, that when the cams 99, 100 rotate, the levers 110, 111, will be lifted swinging about their pivots 112, 113, due to the lift imparted by the eccentric sheaves 105,'and hence the bar 101 will be lifted correspondingly, in such a manner that the plane through the upper faces of the cams 99, 100 and the bar 101, i. e. the plane of the table 16remains substantially horizontal. 1

Fixed to rotate with the crossbar 102 is a toothed wheel 121, Figure 9, the teeth of which are in engagement permanently with a pinion wheel 122, mounted on a spindle 123 between the side-frame 21 and a bracket 124 secured to the base 66. Also on thecrossbar 102, but outside the side-frame 21 is a hand-lever 125 for the purpose of manually adjusting the position of the earns 99, 100,

and the bar 101 and hence the vertical distance of the table 16, from the cross-bar 31. This is necessary, in order that stacks of paper of difierent quantity may be placed initially on the table 16. On the spindle 123 are mounted two further toothed wheels 126, 127, the one, 126, being a ratchet-toothed wheel and being engaged by a ratchet device for a purpose which will be set forth hereinafter, the other, 127, being engaged by a larger toothed wheel 128 mounted on a spindle 129, between the side frame 21 and the bracket 124. On the spindle 129 and oute 9 with the angular; displaeeinent 'of'the whee 121. Thus-for each movement of the recip toothed-Whee1e-128,whileien errn'" 13111oose1y' side" the side-frame 21, is oireu lar diso 130, adapted .to follow-up the rotation of the I mounted on :the spindle 129 isadepted to-be Yarni 131 is'formed in the shape of a pointer; which. slides over at fixed annular; disc-133 V c1amped*to the discf130-by means of the clamping screw 132 The outer end of the for a purpose; set forth hereinafter.

Engagingithe ratchet Wheel 126 "s ing lpaW1 134,' connected With'e horizontal 1ink 135, slidably pivoted at 136-to the s'ide frame -21. This link is adapted tobe held 7 5 v in itsrearward position (tothe right; Figures portion ther'eofis out aweyto' form a'10ng1-= 5malnd'9) by'inea'ns of ,a'spring-137fwhi1e a tudinal're'eesjs 138; A' pinI139 on the oscila rotation of-"the ratchet Whee=1 126 through a predetermined ang le, 'Rotetion of; the ratchet wheel" 126 imparts rotation :to the pinion 122" which, in; turn}, imparts rotation to'the toothed: hee1i121on-thecztmcross-bar I 102, Whilethetoothed3whee1'127 rotates as g oscillation-iofthe 1ink45 thefcnins 99i' and' onewith'gthe ratchetwhee1 l26. The toothed Wheel 1271' imparts motion to; the toothed Whee1128 and'henc'ejto the diso'13OL It WiIl" be" cl'eer' thatrotationof the toothed Wheel 12 1 causes the cross-bar 102' to rotate; and

hence the earns 99 and 100 are movejd e'ngm lowered through a distance correspondin rocato'rye carriage, -i; e.: for) each "to'j-and-fro angular displace'ment and .dEsmalL-lift} 'repec ive y, w t he l ltat he upport:

ing: table 16' is liftedga, smell anionntgafteri '7 hhe o P per:;:i .-p ss d :b tween the r 64. The-ratchet wheel rl26is-prefv entledfrom p I rotating in the. reverse direction, due: to the force exerted thereonby the Weightgot the;

table 16 and the paper supported thereby;

sheet of paper has be after each movementrofthes1idingpeWI134,

. y p l eve 1 :15 e gaging said; whee whic pawlmay d s g ther im by m n o nual y; op r le l Y I. .42 W

y it i desires to "ellow thej table to ,re'turnto normal position,f'Therlever 142 niagyfelso be;

' pressedkwhen 'I it "is I desired: to set "the teble V Means'are pro. dedto stop rapidly? endinoiselessly the: ;recipro c%itory carriage entorneticelly after 'a-t predetermined number of sheets of paper "have been printedfi 'For} this purpose; 7 the annn1ardise133 is s1i-itsfloly graduated to 1. indieaterqnantities ofpapere 1 Theerm'131is' clamped" to .Qthe: disGgI-EJO -Lby imeens ;..of :the

ing Pcylin'der; and: means f'or: rotatin 3' clamping screw '132,"so,thet the pointer registerswith the number onthe'dis'c 133 eorre sponding'withthe iurnber ofsheetsofpaper it is desired to print: As the 'cylinder'is ro I ta'tedft'h'e pinion wheel 122 is rotated, and

1 the tah1ei'16 is raised,-.-9;s previons1y described,"

whilellthe toothed whee1 -128 and hence the disc "130" and pointer 131*"is rotated -st'ep' by-step as each sheet ofpatperv is printed. When the pointer 131 cornes tothe zero-posiest point of the disc 1 33, the end of the pointer Cause it to disengage, said lug and to. drop under zgravityrl The 1at ch 144isi ivote'd at its upper endat 146- to an; arm 14 3 pivoted on a spindle 148 passing thriongh the side;

. Q I'- frame 21 On the spindle insidejthe side ,7 frame 21,-end immediately ebove the li'nk'35 is a second arm or pawl lever 149'W'hich is 1 y adapted, when ith'e latch-144' is disengaged from the lug 145,i; e. when the spindle 1 48 a; is rotated, todrop into engagement with one; i I

of a series ofinotches 150 formed in theupper edgeof thelink 35,itherebyfipreventingsaid I '1 s 1 link from reciprocating as the cylinder 13 is; rotaltedg In this manner the] feed' of for a rotary idnplicatorf'having; a pr-inting v "as further sheets of (paper to the cylinder is 1 sheets ofpaper successively to saidpri'nting eyl'inde'r, s rin m ch nismfonaetu'etingth f 7 reeiprocatory; carriage in the feeding- 'diree-g itiongllinklandglever n eehzinism ior-{aem'ating z rseid,recip roeatory .cefriege inthe-" 'r eiierse di-f.

rebtion,i. me2tns Comprising'cam mechanism? I operated; by r'ota-ti'onf of said der', 1 for ctuating saidfl'ink 'z't "lever-mesh:

, anisrn, a supporting table-"and: rotary -cgm I'mechenislnfor.initialedjustmentof the level] ofsaid tablenndkfor raising-'seidtable sue vr e'essive'ly 'step-byi-step' averticelly latter I leitbi'f s -n d w printingeylinden- 1? ;2.- InLe'sheet feeding f a sepdre printing cylinder, 'ai reciprooetory' carriage and lever mechanism; a

nti'nei y -m 1 11;

l lo

to seid d-, viodforia; rotary i duplicator havingyg v =ijor1 feedingsheetsof-peper suceessivelyto i "s id r nt n l pr n m hm 1- actuating: the *r'eciprooatory ca riage in the feeding directionylinks and. leven rnechenisni 'f oiyetotueting 'lseidgreeiproc'etory?carriege in l thereverse=direetioni;meansieomprising ean mechanism operetted j by rotati'onil 'of said printingcylinder, fori;-'a'etuating said 'link pp orting tebleiand or p 100 1 cylinderiand meansiforrotatingseidprinting 7 [fl cylinder;areoiprocetonycarriage f rifeeding q lever mechanismfor actuating. said recipromentof the level of said table and for rais- 'ing said table successively: step-by ste'p ver:

ticall'y after each sheetof paper 'hasbee'n fed forward to said printing-cylinder, said cam mechanism'actmgon the forward GIlClOfSELldtable and lever mechanism acting on the I rearward endof said table when said cam mechanism acts 'on-the forward vend vof said table; i

. '3. In aisheet feedingand separating device for arotary duplicator as claimed in claim 2,;cam mechanism for actuating, the

lever-mechanism whichacts .on the rearward end offsa'idtable', i i

. 4,;In a sheet feedingand separating device for' a rotary:duplicator-having, a print-, ing cylinder, and-means fo'rvrotating said printing cylinder, ;a reciprocatory carriage for-feeding sheets vof paper successively to said Iprintingcylinder, spring mechanism for 'actuatingthe reciprocatory carriage in the feeding idirection, link and lever I mechanism for actuatingsaid reciprocatory carriage in the reverse direction, a paper. supporting ctable, means: comprising ratchet and pawl mechanlsmfor rais ngsald table successively step-:by-step ias each'sheetgof paper .is fed 6. :In a sheet feeding and separating de- 1 vice for a rotary'duplicator having, a printing cylinder, andxmeans for. rotating said forward to said printing cylinder.

5. In {a sheet-feeding and separating de-i vice for alrotary Hduplicatoras claimed in claim 4, Lmeans'actuatedbythe rotation of the printing cylinder vfor actuating said iratchet and pawl mechanism;

printing cylinder, a 'reciprocatory carriage, spring mechanism for actuating said rec1p-' o rocatoryicarriage"finztlie feeding direction;

o r reciprocatory carr age n-theireverse (llI'GC-y link and. lever, mechanism for actuating said 7 I l ,tion, a stop device, and means for actuating sai dlstopdevicetostop the operation of the reciproquattory, carriage when a predetermined number of sheets of paper has been fed to said printing'cylinderi L I 75111; a sheet feeding and separating device for a rotary duplicator as claimed in 1 claim 16', a graduated disc, a pointer actuated f ing'cylinder, and passing s over said disc, a

concurrently with the rotation of the prints catch {pivoted on a; lever and normally sup ported {on a lug, said levergbeing mounted. on

a spindle ,a pawl on, said spindle,-a series of notches in one of the levers of the link and ocatory carriageimthe reverse direction,'said pawl 1 being adapted to engage said notched I 'leverandssaidpointeribeing adapted to dis;

engage said catch fromsaid lug when'said' o pointeris sin, a predetermined position, said I pawl beingtherebypermittedatoengage said notched, flever to stop the operation of said 'recipr'ocatory' carriage.

8, In a sheet feeding and separat ng de- I vice fora-rotary duplicator having, a print ing cylinder, and means for rotating said printing cylinder, a reciprocatory carriage for feedingsheet's ofv paper successively to said printing cylinder, aplurality of contact fingers on said reciprocatory carriage press- ,ingon the sheet of paper which for the time being is uppermost, friction means on said contact fingers,'means for maintaining said fingers inclined downwardly and towards said printing cylinder at a predetermined angle, means for moving said fingers to an inoperative position, and means for locking said reciprocatory carriage against motion whensaid fingers have been moved to aninoperative position. .a l

9. Ina sheet feeding and separatingde-v vice fora rotaryrduplicator as claimed in claim 8, meansfor moving said; contact fingers individually to an'inoperative position.

10. In a sheet feeding and separating device for arotary duplicator having, a reciprocatory carriage, a plurality of contact fingers onsaid carriage, friction means on said contact fingers, means for moving said contact fingers to an inoperative position, a crossbar supporting said fingers formed with a stepped end, a notched plate fixed relatively to said reciprocatory, carriage,said notched plate being engaged. by the stepped end of said cross-bar when'the contact fingers are moved toan lnoperative position to prevent 1 the reciprocation of said reciprocatory carriage;v e I v V v 11. a sheet feeding and separating devicelfor a rotary duplicator as claimed in claim. 8, abar extending transversely beneath the contact fingers and a hand lever for ac tojan inoperative position."

12-. 'Ina'sheet feeding and separating device fora rotary duplicator having, a print ing 'cyli'nde'r, and means for rotating said pri ting" cylinder, a =reciprocatory carriage for feedingsheets of paper successively to said printing cylinder," a paper supporting table, arOughened surface on part of said cylinder, and a roughened surface on part of tuating saidobar to movesaid contact fingers I 5 tact fingers are moved to anin'operati ve position. p GEORGEHERBERT PADGHAM. I 

